package aatesting;

public class TestPassByReference {
         public static void main(String[] args) {
                // declare and initialize variables and objects
                int i = 25;
                String s = "Java is fun!";
                StringBuffer sb = new StringBuffer("Hello, world");

                // print variable i and objects s and sb
                System.out.println(i);     // print it (1)
                System.out.println(s);    // print it (2)
                System.out.println(sb);  // print it (3)

                // attempt to change i, s, and sb using methods
                iMethod(i);
                sMethod(s);
                sbMethod(sb);

                 // print variable i and objects s and sb (again)
                 System.out.println(i);    // print it (7)
                 System.out.println(s);   // print it (8)
                 System.out.println(sb); // print it (9)

         }

         public static void iMethod(int iTest) {
                iTest = 9;                          // change it
                System.out.println(iTest); // print it (4)
                return;
         }

         public static void sMethod(String sTest) {
                sTest = sTest.substring(8, 11); // change it
                System.out.println(sTest);        // print it (5)
                return;
         }

         public static void sbMethod(StringBuffer sbTest) {
                sbTest = sbTest.insert(7, "Java "); // change it
                System.out.println(sbTest);            // print it (6)
                return;
          }
}

